E2638-PID
Rev 10.03.2021
Operation
Turn on the power. The instrument warm-up time takes ≤1 minute after switching on and
the final sensor stabilization time to maximum accuracy takes <5 minutes. The operating
status is indicated by the LED on the PCB of the device. The control LED (red) response to
different processes is presented in the following table:
Make sure that the detector-transmitter is properly mounted, the external devices
connected, power LED (green) on and control LED (red) constantly lit. Place the lid back
and fix it with the screws. The device is ready to use.
18
Mode
LED mode
During calibration mode or sensor heating
period (if activated)
0.5 Hz (50% on, 50% off)
Relay 1 turned on
Blinking 1 Hz (50% on, 50% off)
Relay 2 turned on
Blinking 2 Hz (50% on, 50% off)
During Modbus communication cycle
Short on-off pulses
Normal operating/measurement
Continuously on or off